title: Problems of statistical analysis of rating scale scores in clinical studies.
abstract: Conventional statistical analysis of rating scale scores in clinical studies are inefficient and may occasionally lead to erroneous conclusions. Analytical methods based on a mixture of distributions is proposed and illustrated with a computational example. Though the model is complex the analysis can be carried out easily using commonly available computer software packages.
authors.affiliation: Department of Epidemiology & Community Medicine, University of Ottawa, Ontario, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Raman
authors.forename: S
authors.initials: S
authors.lastname: Raman
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D001523:Mental Disorders / Q000523:psychology / Q000628:therapy*; D008962:Models, Theoretical; D010556:Personality Tests / Q000706:statistics & numerical data*; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D012984:Software